Lifting spindle
Lifting around the clock
The new lifting spindle from Technische Antriebselemente - T.E.A.-Hamburg - offers a wide range of applications with high energy efficiency thanks to the variable connection of servomotors, stepper motors or motor-gearbox combinations. The actuator is based on a recirculating ball screw with a push tube, push rod and motor adapter. A clamping hub coupling enables the connection of a motor or an intermediate planetary gearbox. External, adjustable, magnetic limit switches are used for homing or as an emergency stop.
This lifting spindle is a possible solution for automation applications in 24-hour operation with a duty cycle of up to one hundred percent. The built-in linear drive meets the requirements for this. The low heat generation of the ball screw drive in combination with a servo motor and a planetary gearbox enable continuous operation. Vertical loads of up to 15 kilonewtons are possible in the strongest version of the lifting spindle. The lifting spindle can also be installed horizontally. With a servomotor in the direct drive, high feed speeds of up to 500 millimetres per second can be achieved with small loads using the lifting spindle; however, the duty cycle should be in the lower range here.
The manufacturer points out that if approach and braking ramps are required, the stroke may be extended and the overall speed reduced. If positioning with high repeat accuracy and frequent approaching or holding a position for a long time is required at a slow feed rate, stepper motors, possibly in combination with planetary gearboxes, are the right choice.
T.E.A. Hamburg installs the lifting spindles with the company's own integrated TAC servo or TIS stepper motors (closed loop). These are available for all common bus systems and also as a stand-alone solution with integrated nano-PLC. However, customers' own motors or geared motors can also be used. pb
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